<template>
    <el-container class="home-container">
      <!-- 头部区域 -->
        <el-header>
          <div>
            <img src="../assets/heima.png" alt="">
            <span>电商管理系统</span>
          </div>  
          <el-button type="info" @click="logout">退出</el-button> 
        </el-header>
        <el-container>
          <!-- 左边侧边栏区域 -->
            <el-aside :width="isCollapse ? '50px': '160px'">
              <div class="toggle-button" @click="toggleCollapse">|||</div>
              <el-menu
                background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened  :collapse="isCollapse" :collapse-transition = "false" :router="true" :default-active = "activePath">
                <!-- 一级菜单 -->
                <el-submenu v-for="item in menuList" :key="item.id" :index="item.id+''">
                  <template slot="title">
                    <!-- 图标 -->
                    <i :class="iconObj[item.id]"></i>
                    <!-- 文本 -->
                    <span>{{item.authName}}</span>
                  </template>
                  <!-- 二级菜单 -->
                  <el-menu-item v-for="subItem in item.children" :key="subItem.id" :index="'/' + subItem.path" @click="getNavStatus('/' + subItem.path)">
                    <template slot="title">
                    <i class="el-icon-menu"></i>
                    <span>{{subItem.authName}}</span>
                  </template>
                  </el-menu-item>
                </el-submenu>
              </el-menu>
            </el-aside>
            <!-- 右边主体内容区域 -->
            <el-main>
              <!-- 路由占位符 -->
              <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
  data(){
    return {
      menuList: [],
      iconObj: {
        '125': 'iconfont iconusers',
        '103': 'iconfont icontijikongjian',
        '101': 'iconfont iconGoodgoods',
        '102': 'iconfont icondanju-tianchong',
        '145': 'iconfont iconreports',
      },
      isCollapse: false,
      activePath:''
    }
  },
  created(){
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout(){
      window.sessionStorage.clear();
      this.$router.push('/login')
    },
    // 获取整体的导航菜单
    async getMenuList(){
      const {data:res} = await this.$http.get('menus');
      if (res.meta.status !==200) return this.$message.error('res.meta.msg');
      this.menuList = res.data;
    },
    // 点击按钮切换导航栏的折叠
    toggleCollapse(){
      this.isCollapse = !this.isCollapse;
    },
    getNavStatus(activePath){
      window.sessionStorage.setItem('activePath',activePath);
      this.activePath = activePath;
    }  
  },
 
}
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
    margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>